JPS637418Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hot water supply ladle for casting that is attached to a water heater and moves to feed molten metal into a sand mold or a mold.

(Prior Art) This type of ladle has an open upper surface and hot water is supplied from a sprue provided at the periphery of the opening, so the ladle is generally tilted to supply hot water.

(Problem to be solved by the invention) However, such tilting of the ladle not only makes it difficult to align the tip of the outflowing metal with the pouring port of the sand mold or mold, but also causes the air volume of the outflowing metal to become difficult. There were problems such as a large amount of contamination causing bubbles in the product, or a significant drop in water temperature making it impossible to obtain a uniform product.

(Means for solving the problem) In order to solve this problem, the present invention has a sprue opened at the bottom of the ladle, and the hot water can be stored and supplied without sealing the opening. It consists of a sprue opening at the bottom, a hot water channel connected to the sprue, a hot water storage chamber connected to the upper part of the hot water path, and a plunger loosely fitted into the hot water storage chamber, and the plunger is connected to an actuating cylinder. A first position located on the lower surface of the opening opening into the hot water storage chamber of the hot water channel, a second position located on the upper surface of the opening, and a third position located on the bottom of the hot water storage chamber are sequentially reciprocated. It is characterized by:

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 indicates a ladle, and the ladle 1 has a sprue 2 opening on the lower surface, a sprue 3 connected to the sprue 2, and a sprue 3. The ladle 1 is formed of a hot water storage chamber 4 connected to the upper part of the hot water storage chamber 4 and a plunger 5 that is loosely fitted into the hot water storage chamber 4.
is fixed to a water heater (not shown) via columns 6, 6 provided on its outer casing and a mounting plate 7 attached to the columns 6, 6. Reference numeral 8 indicates an operating cylinder, into which a large-diameter first piston 9 and a small-diameter second piston 10 are fitted vertically, and the first
The piston rod 11 of the piston 9 is brought into contact with the second piston 10, and one end of the piston rod 12 of the second piston 10 is fitted into the first piston 9 to protrude from the upper surface of the piston 9, and the other end is brought into contact with the cylinder 8. It was made to protrude outside and was connected to the plunger 5. Furthermore, one end cover 8 of the cylinder 8
A is rotatably attached to an engagement plate 14 provided at the end of an adjusting screw 13 screwed into the mounting plate 7, and the other end cover 8b is attached to the shaft cylinder 1 fixed to the ladle 1.
By fitting into the cylinder 5 and adjusting an adjustment screw 13, the cylinder 8 is attached to the ladle 1 so as to be vertically adjustable, so that the stroke of the piston rod 12 can be adjusted. In the figure, reference numerals 16 and 17 indicate working fluid connection ports of the cylinder 8.

Next, to explain its operation, the illustrated state in which the working fluid is supplied from the working fluid connection ports 16 and 17 of the working cylinder 8, that is, the lower surface of the plunger 5 is
When the water heater is operated and the ladle 1 is inserted into the molten metal furnace in the state of the first position located at the lower surface of the opening opening into the hot water storage chamber 4, the molten metal in the furnace is
Flows into the hot water storage chamber 4 via the sprue 2 and the sprue 3,
When the ladle 1 is raised above the melt level of the molten metal furnace after the inflow, the molten metal in the molten metal storage chamber 4 flows out until it matches the lower surface of the opening of the molten metal channel 3 that opens into the molten metal storage chamber 4, and then the molten metal flows out from the opening. Hot water is stored in line with the bottom surface of the tank. At this stage, when the supply of working fluid from the connection port 16 is closed, the second piston 10 rises together with the first piston 9, and when the first piston 9 stops coming into contact with the stepped portion of the cylinder, the plunger 5 is opened. Since the molten metal in the hot water storage chamber 4 rises to the second position located above the upper surface of the opening and lowers the molten metal level below the lower surface of the opening, the molten metal in the hot water storage chamber 4 does not flow out to the outside even when the ladle moves. 2 is moved to match the spout of the mold. Through this movement, the supply of working fluid from the connection port 17 is closed, and when the working fluid is supplied from the connection port 16, the first piston 9, together with the second piston 10, comes into contact with a step in the cylinder. After that, the plunger 5 is moved into the hot water storage chamber 4 by the fluid pressure acting on the end face of the rod 12.
The molten metal is press-fitted into the hot water storage chamber 4, descends to a third position located above the bottom of the hot water storage chamber 4, and supplies the molten metal in the hot water chamber 4 from the hot water channel 3 to the pouring spout via the sprue 2.

(Effects of the Invention) As described above, according to the present invention, the spout 2 of the molten metal ladle 1 opens on its underside, so there is no need to tilt the ladle when supplying molten metal, and the spout 2 opening on the underside makes it easy to align with the pouring spout, so that even a small pouring spout can supply molten metal without spilling it. Furthermore, there is little contact with the outside air when supplying molten metal, so that molten metal can be supplied without being cooled. Furthermore, the spout 2 is connected to the molten metal storage chamber 4 via the molten metal passage 3, and molten metal is supplied by the operation of the plunger 5 that is loosely fitted into the molten metal storage chamber 4, so there is no need to seal the spout 2 with a valve or the like, so that the spout 2 will not be damaged by the molten metal and will operate effectively for a long period of time.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. 1... Ladle, 2... Sprue, 3... Hot water route, 4...
... Hot water storage chamber, 5... Plunger, 8... Operating cylinder.

Claims (1)

[Scope of utility model registration request] It consists of a sprue that opens at the bottom, a hot water channel connected to the sprue, a hot water storage chamber that connects to the top of the hot water path, and a plunger that is loosely fitted into the hot water storage chamber. A first position located on the lower surface of the opening opening into the hot water storage chamber, a second position located on the upper surface of the opening, and a third position located on the bottom of the hot water storage chamber are sequentially reciprocated. Characteristics of hot water supply ladle for casting.